Electronic device including non-contact charging module

• US 10,044,225 B2
• Filed: 01/30/2018
• Issued: 08/07/2018
• Est. Priority Date: 06/14/2011
• Status: Active Grant

• Current Assignee: Sovereign Peak Ventures, LLC (Dominion Harbor Enterprises, LLC)
• Original Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Inventors: Hidaka, Akio, Naruse, Takumi, Fujimura, Munenori, Tabata, Kenichiro, Nishino, Tokuji
• Primary Examiner(s): Williams, Arun
• Application Number:
  US15/883,773
• Publication Number:
  US 20180175668A1
• Time in Patent Office: 189 Days
• Field of Search: 320108
• CPC Class Codes: H01F 27/2871 Pancake coils
• CPC Class Codes: H01F 27/36 Electric or magnetic shields or screens movable for varying inductance H01F21/10
• CPC Class Codes: H01F 27/363 made of electrically conductive material
• CPC Class Codes: H01F 27/366 made of ferromagnetic material
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H02J 50/005 Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H04B 5/266 One coil at each side, e.g. with primary and secondary coils
• CPC Class Codes: H04B 5/77 for interrogation
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

This communication apparatus makes it possible to have a non-contact charging module and a sheet antenna coexist, even in the case where there the non-contact charging module and the sheet antenna in the communication apparatus. The apparatus is provided with: a housing; a secondary-side non-contact charging module, which is housed in the housing, receives power by means of electromagnetic induction, and has a first coil having a conducting wire wound thereon, and a first magnetic sheet facing the first coil; and an NFC antenna, which is housed in the housing, and has a second coil having a conducting wire wound thereon, and a second magnetic sheet facing the second coil. The secondary-side non-contact charging module and the NFC antenna are not laminated to each other.

Claims

1. An electronic device having a communication capability, the electronic device comprising:

a housing having a generally rectangular shape in a plan view of the housing;

a non-contact charging module included in the housing and including;

(i) a wireless charging coil having a substantially planar shape and formed of a wound electrical wire, and (ii) a magnetic sheet that overlaps with the wireless charging coil in the plan view of the housing;

a display arranged closer to the magnetic sheet than to the wireless charging coil of the non-contact charging module;

a battery included in the housing and configured to receive power from the wireless charging coil of the non-contact charging module;

a camera included in the housing; and

a Near Field Communication (NFC) antenna included in the housing and including an NFC coil formed of a wound electrical wire,

wherein a first axis of the wireless charging coil is different from a second axis of the NFC coil.

2. The electronic device according to claim 1, wherein the first axis is orthogonal to the second axis.

3. The electronic device according to claim 2, wherein the generally rectangular shape of the housing includes short edges extending in X direction and long edges extending in Y direction, Z direction extending orthogonal to both the X and Y directions,

wherein the first axis of the wireless charging coil extends in the Z direction and the second axis of the NFC coil extends in the X direction.

4. The electronic device according to claim 2, wherein the generally rectangular shape of the housing includes short edges extending in X direction and long edges extending in Y direction, Z direction extending orthogonal to both the X and Y directions,

wherein the first axis of the wireless charging coil extends in the Z direction and the second axis of the NFC coil extends in the Y direction.

5. The electronic device according to claim 1, wherein the generally rectangular shape of the housing includes short edges short edges extending in X direction and long edges extending in Y direction, and the NFC antenna has an elongated form that extends in the Y direction.

6. The electronic device according to claim 1, wherein the generally rectangular shape of the housing includes short edges short edges extending in X direction and long edges extending in Y direction, and the NFC antenna has an elongated form that extends in the X direction.

7. The electronic device according to claim 1, further comprising a second magnetic sheet for the NFC coil.

8. The electronic device according to claim 1, wherein the wireless charging coil is formed in an oval shape or a circular shape.

9. The electronic device according to claim 1, wherein the wireless charging coil is formed to define a hollow portion surrounded by the wound electrical wire.

10. The electronic device according to claim 9, wherein the hollow portion has an oval shape or a circular shape.

11. The electronic device according to claim 9, wherein the largest span of the hollow portion is greater than 15.5 mm.

12. The electronic device according to claim 11, wherein the hollow portion has a circular shape and a diameter of the circular-shape hollow portion is greater than 15.5 mm.

13. The electronic device of claim 1, wherein the magnetic sheet is made of a ferrite material.